CVE-2018-4284

HIGHNVD 8.88.8—Trending — 4 sources updated this week

8.8

A type confusion issue was addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 71.5%
KEV: Not listed

Published

April 3, 2019

Last Modified

November 21, 2024

References (12)

product-security@applehttps://support.apple.com/kb/HT208932
product-security@applehttps://support.apple.com/kb/HT208933
product-security@applehttps://support.apple.com/kb/HT208934
product-security@applehttps://support.apple.com/kb/HT208935
product-security@applehttps://support.apple.com/kb/HT208936
product-security@applehttps://support.apple.com/kb/HT208938
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208932
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208933
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208934
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208935
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208936
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT208938

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libwebkit2gtk-4.0-doc (2.20.5-0ubuntu0.16.04.1) @ xenial	2026-05-27	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-704Incorrect Type Conversion or Cast

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

UbuntuUSN-3743-1MEDIUM
WebKitGTK+ vulnerabilities

Data Freshness Timeline

(refreshed 15× in last 7d / 15× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 21:07 UTCEG score recompute
2026-05-27 21:07 UTCVendor advisory
2026-05-27 21:07 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-4284?

CVE-2018-4284 is a high vulnerability published on April 3, 2019. A type confusion issue was addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

When was CVE-2018-4284 disclosed?

CVE-2018-4284 was first published in the National Vulnerability Database on April 3, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-4284 actively exploited?

CVE-2018-4284 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-4284?

CVE-2018-4284 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2018-4284?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4284, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-4284

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CVE-2018-4284

Published

Last Modified

References (12)

Patch Availability(1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-4284?

Same vendor

Same CWE

CVE-2018-4284

📅 Published

🔄 Last Modified

🔗 References (12)

Patch Availability(1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-4284?

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References (12)

Frequently asked(5)

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